Displaying 20 results from an estimated 10000 matches similar to: "installing R packages in a networked lab?"
2010 Feb 01
2
hiding/protecting utility functions in .Rprofile
[Env: WinXp, R 2.9.2]
In my .Rprofile, I define a number of utility functions I'd like to have
available in my R session, but don't want them
to be *normally* listed by ls(), or more importantly, saved if I save my
session variables/functions.
How can I do this?
--
Michael Friendly Email: friendly AT yorku DOT ca
Professor, Psychology Dept.
York University Voice: 416
2003 Sep 25
3
ungrouping grouped data
I'm sure this is probably simple, but I can't find an answer...
I have a data frame (Galton's data on heights of parents and children),
in grouped form,
parent child frequency
73.5 72.2 1
73.5 73.2 3
72.5 68.2 1
72.5 69.2 2
72.5 70.2 1
72.5 71.2 2
72.5 72.2 7
72.5 73.2 2
72.5 74.2 4
71.5 65.2 1
71.5 66.2 3
71.5 67.2 4
71.5 68.2 3
71.5 69.2 5
71.5 70.2 10
...
and need the ungrouped
2008 Jun 06
4
color scale mapped to B/W
In an R graphic, I'm using
cond.col <- c("green", "yellow", "red")
to represent a quantitative variable, where green means 'OK', yellow
represents 'warning'
and red represents 'danger'. Using these particular color names, in B/W,
red is darkest
and yellow is lightest. I'd like to find color designations to replace
yellow and
2008 Oct 29
2
sessionInfo() error
[Using R 2.7.2 on Windows XP]
After re-building our heplots package, I've begun to get the following
error from sessionInfo(),
even though it passes R CMD check and builds without errors:
> sessionInfo()
Error in x$Priority : $ operator is invalid for atomic vectors
In addition: Warning message:
In FUN(c("MASS", "heplots", "car", "rgl",
2010 Jan 15
4
transposing a list of vectors
I have a list of vectors, all forced to be the same length:
testlist <- list(
shape=c(0, 0, 2),
cell.fill=c("red","blue","green"),
back.fill=rep("white",3),
scale.max=rep(100,3)
)
> str(testlist)
List of 4
$ shape : num [1:3] 0 0 2
$ cell.fill: chr [1:3] "red" "blue" "green"
$ back.fill: chr [1:3]
2005 Nov 17
3
loess: choose span to minimize AIC?
Is there an R implementation of a scheme for automatic smoothing
parameter selection with loess, e.g., by minimizing one of the AIC/GCV
statistics discussed by Hurvich, Simonoff & Tsai (1998)?
Below is a function that calculates the relevant values of AICC,
AICC1 and GCV--- I think, because I to guess from the names of the
components returned in a loess object.
I guess I could use
2009 Aug 05
2
reading and frequency analysis of Spanish text
For an historical paper I'm working on, I have some Spanish plaintext,
presently in the form of a Word .doc
file,
http://euclid.psych.yorku.ca/SCS/Gallery/images/Private/Langren/Verdadera-spanish-stripped.doc
and also some ciphered text from the same original source. The ultimate
goal is to use some
frequency analysis of letters and word lengths in the plaintext to help
decode the
2009 Mar 05
2
identify() and postscript output
In the following, I'm fitting a logistic regression model, and using
car:::influencePlot. When I run the latter with
output to the screen, it calls identify() that lets me label
observations with large CookD.
However, if I use postscript() to get .eps output, identify() seems not
to be called at all. If instead, I
use dev.copy2eps() after getting output to the screen, the point labels
2008 Oct 08
1
rgl_081.708: rgl.snapshot fails, causing persistent problems
*Summary*: The latest Windows binary version of rgl_081.708 from
R-Forge has some problem that
causes rgl.snapshot() to fail, at least on my system.
Thereafter, *all* rgl 3D graphics are rendered without any text labels.
The last problem remains even after (a) removing rgl and re-installing
from CRAN, (b) re-starting
with a fresh installation of all of R 2.7.2.
*System*: Win XP Pro
A vexing
2008 Aug 17
1
how to override/replace a function in a package namespace?
I'm trying to test an extension of mosaic() from the vcd package that
requires a change to the
basic strucplot() function from that package. I want to test my change
by sourcing the
replacement function into my R session.
But when I do that,
source("c:/R/mosaics/strucplot-MF.R")
and run my extension, it is apparent that it is vcd:::strucplot that is
eventually called, not
my
2007 May 15
1
apt-get update: GPG error from cran.R-project.org
I recently was forced to do a dist-upgrade and rebuild my kernel, so a
lot has
changed on my system, and I don't know if that is related to the errors
& warnings
I get from apt-get update.
Any ideas?
thanks
-Michael
euclid:~# apt-get update
Get: 1 http://debian.yorku.ca stable Release.gpg [378B]
Get: 2 http://debian.yorku.ca stable/updates Release.gpg [189B]
Get: 3
2006 Mar 23
1
comparative density estimates
I have two series of events over time and I want to construct a graph of the
relative frequency/density of these events that allows their
distributions to
be sensibly compared. The events are the milestones items in my project on
milestones in the history of data visualization [1], and I want to
compare trends
in Europe vs. North America.
I decided to use a graph of two overlaid density
2009 Dec 17
1
poly() with unnormalized values
How can I get the result of, e.g., poly(1:3. degree=2) to give me the
unnormalized integer coefficients
usually used to explain orthogonal polynomial contrasts, e.g,
-1 1
0 -2
1 1
As I understand things, the columns of x^{1:degree} are first centered
and then
are normalized by 1/sqrt(col sum of squares), but I can't
see how to relate this to what is returned by poly().
>
2008 Sep 01
3
how to read multiple lines per case
How can I read a space-delimited file, where the data values for each case
are folded before column 80, and so appear on two lines for each case?
The first few cases look like this
loc type bio H2S sal Eh7 pH buf P K Ca Mg Na Mn Zn Cu NH4
OI DVEG 676 -610 33 -290 5.00 2.34 20.238 1441.67 2150.00 5169.05 35184.5
14.2857 16.4524 5.02381 59.524
OI DVEG 516 -570 35 -268 4.75 2.66 15.591 1299.19
2008 Oct 05
1
building packages: "R Help for package foo" vs. "HTML Help"?
In building a package, what are the settings in the package files or the
build commands that
determine whether the compiled HTML help windows have the window title
"R Help for package foo" vs. "HTML Help"?
I often have quite a few help files active, and it is much more
convenient to navigate among
them if the window has an informative title.
If this is simple to test for in
2002 Nov 06
6
how to update installed packages to a new version of R?
I've just installed R 1.6.1 and would like to install all the
contributed packages I had used in 1.5.1.
It's not too hard to do this manually from Rgui, but I wondered if there
is an easier way,
something like writing the results of installed.packages() from 1.5.1 to
a file and
using that with install.packages() in 1.6.1, or just having 1.6.1 read
what's in rw151/library.
--
2008 Dec 09
1
update.packages() for R 2.7.1: mgcv fails
Hi
I just upgraded my debian/stable to R 2.7.1 via apt-get install r-base
r-base-core r-base-dev, and then
began to update.packages()
> update.packages(lib.loc="/usr/local/lib/R/site-library")
> update.packages(lib.loc="/usr/lib/R/library")
but I get:
....
* Installing *source* package 'mgcv' ...
** libs
gcc -std=gnu99 -I/usr/share/R/include -fpic -g
2010 Jul 30
1
how to find non-ASCII characters in .Rd files?
[Env: Win XP Pro / R 2.11.1]
I keep occasionally running into the annoying problem of getting
warnings from R CMD check regarding
non ASCII characters in .Rd files, without any easy way of finding them.
Mostly these come from copy/paste of references or other material from
web pages or Win applications,
and often involve varieties of quote-like characters, e.g., if I try to
include output
2008 Sep 17
1
rgl: plot3d and ellipse3d
Hi
I'm trying to make a 3d plot showing a point cloud, the corresponding
data ellipse
and the principal axes of the ellipse as vectors.
library(rgl)
data(trees)
cov <- cov(trees)
mu <- mean(trees)
plot3d(trees, type="s", size=0.5, col="blue", cex=2)
In this step, an extra box is added. I've tried using box=FALSE, but it
has no effect.
# how to avoid the
2009 Nov 03
2
reshaping pairs of columns
Given a data frame consisting of a pointID and 12 pairs of (lat, long)
variables, with names
latA, longA, latB, longB, ... latL, longL, I want to reshape it into a
data frame with the structure
point source lat long
1 A ... ...
1 B ... ...
I've looked at reshape and plyr, but can't figure out how to do this.
Details of my data frame are below